Add Application::RequestQuit()

sky/viewer/content_handler_impl.cc

Index: sky/viewer/content_handler_impl.cc
diff --git a/sky/viewer/content_handler_impl.cc b/sky/viewer/content_handler_impl.cc
index 3bf26f52d74b8417a74f31c8c536aa3f14ed740d..d10a7824faf5d350b5cf69d78da441e26e3f9f5b 100644
--- a/sky/viewer/content_handler_impl.cc
+++ b/sky/viewer/content_handler_impl.cc
@@ -6,6 +6,7 @@
 
 #include "base/bind.h"
 #include "mojo/public/cpp/application/connect.h"
+#include "mojo/public/cpp/utility/run_loop.h"
 #include "mojo/services/network/public/interfaces/network_service.mojom.h"
 #include "sky/viewer/document_view.h"
 
@@ -52,6 +53,10 @@ class SkyApplication : public mojo::Application {
     }
   }
 
+  void RequestQuit() override {
+    mojo::RunLoop::current()->Quit();
+  }
+
  private:
   void OnResponseReceived(
       mojo::URLLoaderPtr loader,